private void hideMessage_Click(object sender, EventArgs e)
{
ulong[] CodedText = Coding.Encoding(Message);
ulong hash = Hash.GetHash(CodedText, OpenKey, Module);
ulong[] RandomStorage;
List <ulong> Random = new List <ulong>();
string StringRandomRange = "1";
int EilerLength = Module.ToString().Length;
for (int i = 0; i < EilerLength / 2; ++i)
{
StringRandomRange += "0";
}
ulong RandomRange = Module - Convert.ToUInt64(StringRandomRange);
for (ulong i = RandomRange; i < Module; ++i)
{
if (1 == Euclid.FindGSD(i, Module))
{
Random.Add(i);
}
}
RandomStorage = Random.ToArray();
Random rand = new Random();
ulong k = RandomStorage[rand.Next(0, RandomStorage.Length)];
reverseK = ExtendedEuclid.FindReverse(k, Module);
HidedMessage = (hash * ExpByModule.Exponentiation(k, OpenKey, Module)) % Module;
}
private void button2_Click(object sender, EventArgs e)
{
this.textBox6.Text = "";
ulong G = Convert.ToUInt64(this.textBox3.Text);
ulong P = Convert.ToUInt64(this.textBox2.Text);
ulong Y = Convert.ToUInt64(this.textBox1.Text);
ElGamal ElG = new ElGamal(G, P, Y, true);
ElG.k = ElG.GetK();
ElG.a = ElG.GetFirstCypherPart();
ulong[] code = Coding.Encoding(this.textBox4.Text);
ulong[] cypher = ElG.Encription(code);
ulong[] fullCypher = new ulong[cypher.Length + 1];
fullCypher[0] = ElG.a;
int fullCypherLength = fullCypher.Length;
for (int i = 1; i < fullCypherLength; ++i)
{
fullCypher[i] = cypher[i - 1];
}
this.textBox5.Text = ElG.a.ToString();
for (int i = 0; i < fullCypherLength; ++i)
{
this.textBox6.Text += fullCypher[i].ToString();
}
frm3.Cypher = fullCypher;
}
private void button2_Click(object sender, EventArgs e)
{
this.textBox7.Text = "";
ulong[] CodedText = Coding.Encoding(Message);
ulong hash = Hash.GetHash(CodedText, OpenKey, P) % Q;
if (0 == hash)
{
hash = 1;
}
Random rand = new Random();
ulong K = (ulong)rand.Next(0, (int)Q);
ulong[] sign = new ulong[2];
sign[0] = ExpByModule.Exponentiation(A, K, P) % Q;
sign[1] = (SecretKey * sign[0] + K * hash) % Q;
if (0 == sign[0])
{
bool check = true;
while (check)
{
K = (ulong)rand.Next(0, (int)Q);
sign[0] = ExpByModule.Exponentiation(A, K, P) % Q;
sign[1] = (SecretKey * sign[0] + K * hash) % Q;
if (0 != sign[0])
{
check = false;
}
}
}
Signature = sign;
}
private void button1_Click(object sender, EventArgs e)
{
ulong[] CodedText = Coding.Encoding(Message);
ulong hash = Hash.GetHash(CodedText, OpenKey, P) % Q;
if (0 == hash)
{
hash = 1;
}
ulong v = ExpByModule.Exponentiation(hash, Q - 2, Q);
ulong z1 = (Signature[1] * (v % Q)) % Q;
ulong z2 = (((Q - Signature[0]) % Q) * v) % Q;
ulong u = ((ExpByModule.Exponentiation(A, z1, P) * ExpByModule.Exponentiation(OpenKey, z2, P)) % P) % Q;
this.textBox7.Text = u.ToString();
this.textBox8.Text = Signature[0].ToString();
if (u == Signature[0])
{
this.label9.Text = "Цифровая подпись действительна";
}
else
{
this.label9.Text = "Цифровая подпись не действительна";
}
}
private void button2_Click(object sender, EventArgs e)
{
ulong[] CodedText = Coding.Encoding(this.textBox5.Text);
ulong hash = Hash.GetHash(CodedText, Convert.ToUInt64(this.textBox3.Text), Convert.ToUInt64(this.textBox1.Text) * Convert.ToUInt64(this.textBox2.Text));
this.textBox6.Text = ExpByModule.Exponentiation(hash, Convert.ToUInt64(this.textBox4.Text), Convert.ToUInt64(this.textBox1.Text) * Convert.ToUInt64(this.textBox2.Text)).ToString();
}
private void button1_Click(object sender, EventArgs e)
{
ulong[] CodedText = Coding.Encoding(Message);
ulong hash = Hash.GetHash(CodedText, OpenKey, P);
FirstVerification = ExpByModule.Exponentiation(G, hash, P).ToString();
SecondVerification = ((ExpByModule.Exponentiation(OpenKey, Signature[0], P) * ExpByModule.Exponentiation(Signature[0], Signature[1], P)) % P).ToString();
if (FirstVerification == SecondVerification)
{
this.label9.Text = "Цифровая подпись действительна";
}
else
{
this.label9.Text = "Цифровая подпись не действительна";
}
}
private void button1_Click(object sender, EventArgs e)
{
this.label5.Visible = true;
this.textBox4.Visible = true;
this.button2.Visible = true;
ulong openkey = Convert.ToUInt64(this.textBox1.Text);
ulong module = Convert.ToUInt64(this.textBox2.Text);
RSA rsa = new RSA(openkey, "Открытый");
ulong[] code = Coding.Encoding(this.textBox3.Text);
ulong[] cypher = rsa.Encription(code, module);
int CypherLength = cypher.Length;
for (int i = 0; i < CypherLength; ++i)
{
this.textBox4.Text += cypher[i].ToString();
}
frm1.Cypher = cypher;
}
private void button2_Click(object sender, EventArgs e)
{
ElGamal elG = new ElGamal(P, G, X);
ulong K = elG.GetK();
ulong[] CodedText = Coding.Encoding(Message);
ulong hash = Hash.GetHash(CodedText, OpenKey, P);
ulong a = ExpByModule.Exponentiation(G, K, P);
ulong reverseK = ExtendedEuclid.FindReverse(K, P - 1);
ulong b;
for (ulong i = 1; ; ++i)
{
if (hash == ((X * a + i * K) % (P - 1)))
{
b = i;
break;
}
}
ulong[] sign = new ulong[2];
sign[0] = a;
sign[1] = b;
Signature = sign;
}
private void button1_Click(object sender, EventArgs e)
{
ulong[] CodedText = Coding.Encoding(this.textBox3.Text);
this.textBox5.Text = Hash.GetHash(CodedText, Convert.ToUInt64(this.textBox1.Text), Convert.ToUInt64(this.textBox2.Text)).ToString();
}